Multiple window extension?

[fna-xna]

Multiple window extension?

[flibitijibibo]

It will be less work for you to use multiple SDL_Window* handles directly and wire them to two GraphicsDevices then it will be to staple an extra GameWindow into the XNA Game design. The GameWindow and Game were deliberately designed to only give users a single window and a game loop, and that was it - even by their own recommendation it's better to self-build multiple windows and graphics contexts, because the Game structure is so limited.

Odds are, whatever you're doing that requires multiple windows is a little bit smarter than what the XNA design can provide, no matter how many extensions you add.